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Re: 2D and 3D filled objects. [message #33467 is a reply to message #33373]

Fri, 27 December 2002 09:03

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

New2IDL (biomedthesis2002@yahoo.com) writes:

> I already tried to generate the sphere the same way but the problem is
> it has various densities. I want a sphere with one density and that
> density is White.
>
> I've written my own code for 3D thinning. I'm not sure if the
> algorithm is right. I know what to expect when i thin a binary sphere.
> That's the reason for this question. To cross check that in 2D, i need
> a binary circle that is completely filled with each pixel value as
> 255.

Well, then, how about this:

sphere = FltArr(20, 20, 20)
FOR x=0,19 DO FOR y=0,19 DO FOR z=0,19 DO $
sphere(x, y, z) = SQRT((x-9.5)^2 + (y-9.5)^2 + (z-9.5)^2)
indices = Where(sphere GT 0)
sphere(indices) = 255

Cheers,

David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		2D and 3D filled objects. By: biomedthesis2002 on Thu, 26 December 2002 12:34
		Re: 2D and 3D filled objects. By: David Fanning on Fri, 27 December 2002 09:16
		Re: 2D and 3D filled objects. By: David Fanning on Fri, 27 December 2002 09:03

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